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Thanos is the Mad Titan and the big boss of the Marvel universe who is going to be the main supervillain of the upcoming Avengers Infinity War. Thanos will first figure out where all the Infinity gems are, assemble them and create an all-powerful Infinity gauntlet to cause a worldwide catastrophe. In Avengers 4, Team Avengers and Guardians of the Galaxy unite and fight against the mad Titan to save the universe. But if we talk about the comics, then there are many characters

The comic-book fans have their own favorites they want to pit against other superheroes. In our limited knowledge, those who are not neck deep into Marvel comics think that Thor is the most powerful cosmic being in the entire realm. He is God of Thunder and the worthy successor to Odin, the ruler of Asgard. He could lift sacred hammer Mjolnir which is one of the most powerful objects in the Marvel universe and is physically strong to withstand planet shattering attacks and

The world is not just black and white, there are some gray areas too. There are people who change from good to bad and those too who change from bad to good. Our superheroes are no different and many of them have also gone through this transformation. Here are fifteen superheroes from Marvel that were once bad guys but later went to the side of light: Black Widow Natasha Romanoff aka Natasha Romanova first appeared as an antagonist in the comics. She is a Russian, who was r